Exam 3: Skull lecture ii

Question 1

parts of the sphenoid bone (4)

Answer 1

1. body
2. lesser wings (LW)
3. greater wings (GWC, GWO; GWT)
4. pterygoid processes (PP, LP, and MP)

Question 2

petrous part of temporal makes joint w/

Answer 2

greater wing of sphenoid (petrous means rock like)

Question 3

squamous part of temporal contains the _ which articulates with the condyloid process of mandible

Answer 3

mandibular fossa

Question 4

foramen magnum of occipital: spinal cord becomes continuous w/ _ here

Answer 4

medulla oblongata

Question 5

foramen magnum of occipital: transmits blood vessels and cranial nerve _

Answer 5

XI

Question 6

occipital condyles: articulates w/

Answer 6

vertebral column

Question 7

opening of carotid canal: transmits _ artery

Answer 7

internal carotid artery (supplies most blood to the skull)

Question 8

jugular foramen: transmitis cranial nerves _, _, and _ and the _ vein

Answer 8

IX, X, XI, and internal jugular vein (drains most blood of the skull)

Question 9

stylomastoid foramen: transmits cranial nerve _ and the _ artery

Answer 9

VII and the stylomastoid artery

Question 10

anterior cranial fossa: contains brain’s _ lobes

Answer 10

frontal

Question 11

middle cranial fossa: contains brain’s _ lobes

Answer 11

temporal

Question 12

posterior cranial fossa: contains brain’s _, _, and _

Answer 12

pons, cerebellum, and medulla oblongata

Question 13

bone feats of ethmoid bone: crista galli: bony ridge that projects _; for attachment of _

Answer 13

superiorly; of falx cerebri

Question 14

bone feats of ethmoid bone: cribriform plate: _ plate of bone containing many foramina that transmit the fibers of cranial nerve _ from the _ to the brain

Answer 14

horizontal plate; cranial nerve I from the nasal cavities to the brain

Question 15

opening of optic canal: also opens into the _; transits cranial nerve _

Answer 15

orbit; cranial nerve II

Question 16

sella turcica: saddle-like bony formation on body of _; its floor, the _, houses the pituitary gland

Answer 16

(part of the sphenoid) sphenoid; floor the hypophysial fossa

Question 17

anterior clinoid processes: sharp projections of the _

Answer 17

lesser sphenoidal wings (clinoid = bed bost like)

Question 18

crescent of 4 “foramina” perforating the sphenoid: superior orbital fissure: btwn _ and _ wings; also opens into _; transmits cranial nerves _, _, part of _ and _

Answer 18

greater and lesser wings; orbit; III, IV, part of V, and VI (muscle that moves the eyeball)

Question 19

crescent of 4 “foramina” perforating the sphenoid: foramen rotundum: transmits part of cranial nerve _

Answer 19

V

Question 20

crescent of 4 “foramina” perforating the sphenoid: foramen ovale: transmits part of cranial nerve _

Answer 20

V

Question 21

crescent of 4 “foramina” perforating the sphenoid: foramen spinosum: transmits a branch of a branch of cranial nerve

Answer 21

V (spinosum = spiny shaped)

Question 22

foramen lacerum: an artifact of a dried skull; in life, closed by a _ plate

Answer 22

cartilage plate (lacerum = torn/ragged)

Question 23

opening of internal acoustic meatus: transmits cranial nerve _ and _

Answer 23

VII and VIII

Question 24

hypoglossal canal: transmits cranial nerve _

Answer 24

XII

Question 25

groove for sigmoid sinus: the _, a blood vessel, lies here

Answer 25

the sigmoid sinus (vein)

Question 26

internal occipital crest: helps form 2 _, which house the cerebellum

Answer 26

cerebellar fossae

Question 27

most bones of the calvaria consist of 2 mostly flat (although slightly curved) plates of _ bone that are separated by _

Answer 27

compact bone separated by diploe

Question 28

diploe is _ bone containing red bone marrow

Answer 28

spongy (cancellous)

Question 29

some skull bones are hollow; the air-filled space w/in such a bone is a _

Answer 29

paranasal sinus

Question 30

all paranasal sinuses connect to the _ cavity. | these include the (4)

Answer 30

nasal cavity 1. frontal sinus (F) 2. sphenoid sinus (S and SS) 3. ethmoid cells (sinus) (E) 4. maxillary sinus (M)

Question 31

fontanelles: _ membranes separating some of the skull bones of neonates

Answer 31

fibrous

Question 32

fontanelles: they allow the shape of the _ to be molded during birth

Answer 32

cranium

Question 33

fontanelles: largest one is the _ fontanelle

Answer 33

anterior fontanelle

Question 34

scalp: it is a somewhat _ soft tissue mantle covering the _

Answer 34

mobile soft tissue mantle covering the calvaria

Question 35

5 layers of scalp:

Answer 35

``` S:kin C:onnective tissue A:poneurosis L:oose (areolar) connective tissue P:ericranium ```

Question 36

scalp: skin: contains _ glands, _ glands, and hair follicles

Answer 36

sweat and sebaceous glands

Question 37

scalp: connective tissue: well supplied w/ blood vessels and _ nerves

Answer 37

cutaneous

Question 38

scalp: aponeurosis: the 2 bellies of the _ muscle are connected by a flat tendon, the _ aponeurosis

Answer 38

2 bellies (frontal and occipital) of the occipitofrontalis muscle are connected by a flat tendon, the epicranial aponeurosis

Question 39

scalp: pericranium: the _ of the bones of the neurocranium

Answer 39

periosteum

Question 40

the 3 most superficial layers of the scalp are intimately _ and move as a unit

Answer 40

connected

Question 41

the 3 most superficial layers of the scalp is separated from the pericranium/skull bones by the _ layer, which allows mobility of the unit over the skull and permits traumatic separation of the scalp from the _

Answer 41

loose connective tissue layer; cranium

Question 42

most facial and scalp muscles have an origin on the _ and an insertion of the _; they produce their effect by pulling the skin (some act as _, closing orifices)

Answer 42

origin on the skeleton and an insertion of the skin; (some act as sphincters, closing orifices)

Question 43

facial muscles are all derived from the _ arch and are thus supplied by the nerve of this arch, the _ nerve

Answer 43

the 2nd pharyngeal arch; the facial nerve (CN VII)

Question 44

t/f: the deep fascia found in most body locations is absent in the face

Answer 44

true

Question 45

orbicularis oculi: origin

Answer 45

from edges of orbit

Question 46

orbicularis oculi: insertion

Answer 46

to tarsal plates of eyelids and skin around orbit

Question 47

orbicularis oculi: action

Answer 47

close eyelids

Question 48

orbicularis oculi: innervation

Answer 48

facial nerve